Personal finance terms, defined
Budgeting, credit, goals, behaviour and the general finance vocabulary underneath them. 53 terms with full definitions.
The vocabulary of a household balance sheet
This topic gathers the terms a household actually uses, plus the general finance concepts everything else on the site depends on. Cash flow: budget, surplus, fixed and variable expense, emergency fund. Credit: credit score, utilisation, hard and soft enquiry, default, settlement versus closure. Position: net worth, asset, liability, liquidity. Growth: compounding, time value of money, real return, rule of 72.
The last group in this topic is the one most often left out of glossaries and most often decisive: the behavioural terms. Loss aversion, recency bias, anchoring, lifestyle inflation and present bias are not decoration. The gap between a good financial plan and a good financial outcome is usually explained by one of them rather than by any analytical error.
A note on one distinction that costs people real money: settling a loan and closing a loan are different events with very different consequences on a credit report. Both are defined below.
53 personal finance terms, A to Z
Definitions are unabridged. Worked examples for every term live in the interactive glossary.
401(k) and IRA
A 401(k) is a tax-advantaged retirement savings account offered by US employers, named after the section of the US tax code that governs it. Employees contribute pre-tax dollars from their paycheck (reducing current taxable income) into the account, where the money grows tax-deferred — taxes are paid only upon withdrawal in retirement. Many employers “match” employee contributions up to a certain percentage (e.g., 50% match up to 6% of salary), making the 401(k) one of the most valuable employee benefits available. The 2024 annual contribution limit is $23,000 ($30,500 for those 50+). The Traditional IRA (Individual Retirement Account) is a personal (not employer-sponsored) tax-advantaged retirement account — contributions may be tax-deductible depending on income and employer plan access. The Roth IRA is funded with after-tax dollars but grows completely tax-free — withdrawals in retirement are tax-free. Roth IRA is particularly valuable for young earners who are currently in a lower tax bracket, as they pay today’s lower rate and avoid all future taxes on potentially decades of compounded growth. Annual IRA contribution limit: $7,000 ($8,000 for 50+) in 2024. For Indian Americans, 401(k) and IRA management is a critical financial planning consideration. Those returning to India face complex decisions about whether to convert to Roth, withdraw, or leave US retirement accounts in place, with tax treaty implications between India and the US.
Adverse Selection
Adverse selection is an information asymmetry problem in insurance markets where individuals with higher-than-average risk are more likely to seek insurance coverage than lower-risk individuals, leading to a disproportionately risky pool of insured persons for the insurer. The problem arises because the insured typically knows more about their own health, driving habits, or other risk factors than the insurer does, and this informational imbalance causes the insurance pool to skew toward higher-risk individuals who stand to benefit most from coverage. If left unchecked, adverse selection can lead to a “death spiral” — rising claims force premium increases, which drive out lower-risk individuals, further worsening the claims experience, and ultimately making coverage unaffordable or impossible to provide. A classic illustration of adverse selection in health insurance: if an insurer offers coverage without medical underwriting (no health questionnaires or pre-existing condition exclusions), individuals in poor health — who know they will likely make claims — will be strongly motivated to buy coverage, while young, healthy individuals may opt out, finding the premium not worth paying for coverage they don’t expect to use. The resulting insured pool is disproportionately composed of unhealthy individuals, leading to higher-than-expected claims and forcing premium increases, which further discourage healthy enrolments. This is precisely why health insurers impose waiting periods for pre-existing conditions and require medical declarations at enrollment. Adverse selection is addressed in the Indian insurance market through several regulatory and product design mechanisms: mandatory third party motor insurance eliminates the ability of high-risk drivers to self-select out of the system; group health insurance through employers spreads risk across a diverse pool (since employees are selected for employment, not for health risk); IRDAI’s regulations on waiting periods for pre-existing diseases protect health insurers from the worst forms of adverse selection; and life insurance underwriting (requiring medical examinations for high sum-assured policies) allows insurers to identify and price high-risk applicants appropriately before coverage is granted.
Anchoring Bias
Anchoring is over-reliance on the first piece of information encountered. Investors anchored to a stock’s 52-week high refuse to buy at lower prices. Negotiators who state the first number anchor the entire discussion to their advantage.
Basis Points (bps)
A basis point is 1/100th of a percentage point (0.01%). Used to describe interest rate changes, credit spreads, and fee changes precisely — avoiding ambiguity between ‘percentage’ and ‘percentage points.’ 25 bps = 0.25%; 100 bps = 1%; 50 bps = 0.50%. Central banks globally (including RBI) change rates in multiples of 25 bps.
Behavioural Finance
Behavioural finance studies how psychological biases and emotions influence investor decisions, often leading to irrational behaviour — buying at market peaks (FOMO) and selling at troughs (panic). Key biases: loss aversion, overconfidence, anchoring, herding, and recency bias. Understanding these helps investors make more rational long-term decisions.
Black Swan Event
A black swan is a rare, unpredictable, high-impact event beyond normal expectations — COVID-19, 2008 financial crisis, 9/11. Nassim Taleb coined the term. Financial planning should account for tail risks through diversification and emergency funds rather than trying to predict specific events.
Budget
A budget is a financial plan that estimates income and expenses over a specific period — monthly, quarterly, or annually. Budgeting helps individuals and businesses allocate resources efficiently, avoid overspending, and build savings. India’s Union Budget, presented every February, is the national budget allocating government expenditure across sectors.
Budget Deficit
Budget deficit occurs when a government’s total expenditure exceeds its total revenue. It differs from fiscal deficit (which includes capital expenditure financing). Budget deficits are financed by borrowing through government securities, which creates national debt. Persistent large deficits crowd out private investment and fuel inflation.
Budgeting
Budgeting is the process of allocating income across categories — needs, wants, savings — before spending. The 50-30-20 rule allocates 50% to needs, 30% to wants, 20% to savings and investments.
Capital Account (BOP)
The Capital Account in India’s Balance of Payments records cross-border capital transactions — FDI (foreign direct investment), FPI (portfolio investment), ECB (external commercial borrowing), NRI deposits, and short-term credit. India’s capital account is partially open — FDI is generally free, but FPI and retail capital flows face restrictions to prevent volatility.
CAPM (Capital Asset Pricing Model)
CAPM: Expected Return = Risk-Free Rate + Beta × (Market Return − Risk-Free Rate). Beta measures systematic risk relative to market. Used to calculate cost of equity in WACC. High beta stocks require higher expected returns to compensate risk.
Compound Interest
Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. Unlike simple interest (calculated only on principal), compound interest grows exponentially — this is the ‘eighth wonder of the world’ as attributed to Einstein. The formula is A = P(1 + r/n)^(nt).
Compound Interest Calculator →Compounding Frequency
Compounding frequency determines how often accumulated interest is reinvested to earn interest on interest. Higher frequency = more compounding = higher effective returns. Common frequencies in India: Annual (PPF, NSC), Semi-annual (G-Secs), Quarterly (FDs, RDs), Monthly (SIP returns stated as), and Daily (savings account interest calculated).
Confirmation Bias
Confirmation bias is the tendency to seek, interpret, and remember information that confirms existing beliefs while ignoring contradicting evidence. In investing, a bull ignores negative news; a bear dismisses positive data — both remain wrong in their own echo chambers.
Consumer Price Index (CPI)
CPI measures the average change in prices paid by consumers for a basket of goods and services — food, housing, clothing, transportation, and healthcare. India’s CPI is released by the Ministry of Statistics (MoSPI) monthly. RBI targets headline CPI inflation at 4% ± 2%. CPI directly impacts savings decisions, loan rates, and government schemes indexed to inflation.
Debt Avalanche
The debt avalanche method targets the highest-interest debt first, minimising total interest paid over time. It is mathematically optimal but requires discipline without early psychological wins.
Debt Snowball
The debt snowball method prioritises paying off the smallest debt first (regardless of interest rate), then rolling that freed payment to the next debt. It builds psychological momentum and motivation.
Devaluation vs Depreciation (Currency)
Currency devaluation is a deliberate government/central bank action to reduce the official exchange rate (in fixed or managed exchange rate systems). Currency depreciation is a natural market-driven fall in the currency’s value (in floating exchange rate systems). India operates a managed float — RBI intervenes but doesn’t peg the rupee officially.
Discounting (Finance)
Discounting is the process of finding the present value of a future cash flow by applying an appropriate discount rate. It is the reverse of compounding — future money is worth less than present money because of the time value of money. Discounting is fundamental to valuation: DCF (Discounted Cash Flow) model values businesses based on discounted future cash flows.
Efficient Market Hypothesis (EMH)
EMH states that market prices fully reflect all available information. Weak form: prices reflect historical data (technical analysis fails). Semi-strong: prices reflect public information (fundamental analysis fails). Strong: prices reflect all information including insider data.
Emergency Fund
An emergency fund is a cash reserve of 3–6 months of living expenses kept in a highly liquid instrument (savings account, liquid fund, or sweep-in FD) to cover unexpected expenses — job loss, medical emergency, or urgent repairs — without disrupting long-term investments or going into debt.
Emergency Fund Calculator →Fiscal Deficit
Fiscal deficit is the difference between a government’s total expenditure and its total revenue (excluding borrowings). It represents how much the government borrows to fund its spending. India’s fiscal deficit is expressed as a percentage of GDP — the current FRBM target is 4.5% by FY 2025-26.
FRBM Act (Fiscal Responsibility and Budget Management)
The FRBM Act 2003 legally binds the Indian government to prudent fiscal management — reducing fiscal deficit to 3% of GDP. The Act mandates annual Medium-Term Fiscal Policy Statements and requires fiscal consolidation on a glide path. Escape clauses allow breaches during national calamities (COVID-19 triggered the escape clause in 2020).
GDP (Gross Domestic Product)
GDP is the total monetary value of all goods and services produced within a country’s borders during a specific period. India measures GDP quarterly and annually — India’s GDP crossed ₹300 lakh crore (~$3.7 trillion) in FY 2024, making it the world’s 5th largest economy. GDP growth rate is a key indicator of economic health.
Gig Economy
The gig economy comprises workers who earn income through short-term contracts, freelance work, or platform-based tasks — rather than permanent employment. In India, Swiggy/Zomato delivery partners, Ola/Uber drivers, Urban Company professionals, and freelancers are part of the gig economy. Gig workers must file ITR as self-employed and pay GST if turnover exceeds ₹20 lakh.
Government Budget (Union)
The Union Budget is presented by the Finance Minister in Parliament every February 1 (since 2017, changed from last day of February). It contains the Annual Financial Statement (revenues and expenditures), Finance Bill (tax changes requiring parliamentary approval), and demands for grants (ministry-wise spending approvals). The Budget sets income tax rates, announces schemes, and determines capital allocation across sectors.
Gross Domestic Product (GDP) Deflator
The GDP deflator is a measure of the overall price level in an economy — calculated as (Nominal GDP ÷ Real GDP) × 100. Unlike CPI (which tracks a basket of consumer goods), the GDP deflator covers all goods and services produced in the economy. It is used to convert nominal GDP to real GDP to track genuine economic growth.
Hypothetical Portfolio
A hypothetical portfolio is a simulated investment portfolio created for planning or educational purposes — showing what returns would have been if a particular strategy were followed historically. Financial advisors use backtested hypothetical portfolios to illustrate asset allocation benefits and strategy outcomes, though past performance doesn’t guarantee future results.
Index of Industrial Production (IIP)
IIP measures the output of India’s industrial sector — manufacturing, mining, and electricity — on a monthly basis. Published by MoSPI, IIP is a leading economic indicator and barometer of industrial health. Rising IIP signals economic expansion; declining IIP signals contraction. RBI and government use IIP to calibrate monetary and fiscal policy.
Indian Financial Calendar
Key Indian financial calendar dates: April 1 — new financial year begins; July 31 — ITR filing deadline (non-audit); Sept 30 — ITR deadline (audit cases); March 15 — advance tax 100% deadline; March 31 — last day to make tax-saving investments; January 1 — AIS/TIS update.
Inflation
Inflation is the rate at which the general price level of goods and services rises over time, eroding purchasing power. India measures inflation using the Consumer Price Index (CPI) for retail inflation and Wholesale Price Index (WPI) for wholesale prices. The RBI targets CPI inflation at 4% (±2%) through its monetary policy.
Inflation and Future Value →Inflation Adjusted Returns (Real Returns)
Real return = [(1 + Nominal Return) / (1 + Inflation)] − 1. It measures the actual increase in purchasing power. A 10% equity return during 7% inflation generates only ~2.8% real return — the investor can buy only 2.8% more goods.
Real Return Calculator →Liability (Personal Finance)
A liability is any financial obligation — money owed to others. Personal liabilities include: home loan, car loan, personal loan, credit card outstanding, education loan, and any other borrowed amount. Net worth = Assets − Liabilities. Reducing liabilities (especially high-interest debt) is as important as growing assets in wealth building.
Life Expectancy
Life expectancy is the average age to which a person is expected to live, used in retirement and insurance planning. India’s average life expectancy is approximately 70.8 years (2024), but well-nourished urban professionals frequently live to 80–90. Planning retirement for 25–30 years post-retirement (vs 15–20 years a generation ago) is now essential to avoid outliving your savings.
Lifestyle Inflation
Lifestyle inflation occurs when spending rises proportionally with income, preventing wealth accumulation. As salary increases, expenses expand to match — new car, bigger home, frequent travel — leaving savings unchanged.
Liquid Asset
A liquid asset is one that can be quickly converted to cash with minimal loss of value — savings account, liquid funds, FDs (with premature withdrawal option), and listed stocks. Illiquid assets (real estate, private equity, long-term FDs) cannot be immediately monetised without potentially significant loss. Maintaining 3–6 months of expenses in liquid assets is a fundamental financial planning principle.
Loss Aversion
Loss aversion is the psychological tendency to feel losses approximately twice as strongly as equivalent gains. Kahneman and Tversky’s Prospect Theory quantified this. It causes investors to hold losing investments too long and sell winners too early (disposition effect).
Mental Accounting
Mental accounting is treating money differently based on its source, purpose, or classification. Casino winnings spent recklessly while salary is saved carefully; bonus used for luxuries while salary is budgeted strictly — the money is identical but treated differently.
Net Worth
Net worth is the total value of everything you own (assets) minus everything you owe (liabilities). It is the most fundamental measure of personal financial health. Positive and growing net worth means you are building wealth; negative net worth means liabilities exceed assets.
Net Worth Calculator →Opportunity Cost
Opportunity cost is the value of the next best alternative foregone when making a financial decision. It reminds us that every choice has a hidden cost — the benefit you didn’t get by not choosing the alternative. This concept helps in evaluating true cost of financial decisions beyond just explicit expenses.
Passive Income
Passive income is earnings that require little to no active effort to maintain after the initial setup — rental income, dividend income, interest from FDs/bonds, SWP from mutual funds, royalties, and revenue from digital products. Building passive income streams is the foundation of financial independence in India.
Power of Attorney
A Power of Attorney (PoA) is a legal document authorising someone to act on your behalf for financial or legal matters. In India, it is used extensively for property transactions, NRI investments, and bank operations when the account holder is unavailable.
Principal
Principal is the original amount of money borrowed in a loan or invested in a financial instrument — before interest is applied. In a loan, interest is calculated on the outstanding principal. As EMIs are paid, the principal reduces over time (amortisation). In investments, principal is the initial capital deployed.
Probate
Probate is a court-supervised legal process to validate a deceased person’s will and authorise asset distribution. In India, probate is mandatory in Mumbai, Chennai, and Kolkata for immovable property. It can take 1–5 years.
Rule of 72
The Rule of 72 is a quick mental shortcut to estimate how long it takes money to double: Years to Double = 72 ÷ Interest Rate. It works for investments, inflation erosion, and debt growth.
CAGR to Double →Rupee Depreciation Impact
Rupee depreciation (rupee weakening against USD) has multiple effects: Imports become expensive (oil, electronics, gold) → inflation rises; Exports become competitive (IT services, pharma, gems) → exports boost; NRI remittances increase in rupee terms; External debt (in USD) becomes costlier to repay; Foreign education and travel becomes expensive for Indians.
Savings Rate
The savings rate is the proportion of income saved (not spent on consumption). India’s household savings rate has historically been high (22–28% of GDP) — a key driver of domestic investment and economic growth. However, the composition has shifted from physical savings (gold, real estate) to financial savings (FDs, mutual funds), which are more productive for the economy.
Simple Interest
Simple interest is calculated only on the original principal: SI = (P × R × T) / 100. Unlike compound interest, it does not earn returns on accumulated interest. Common in short-term loans and fixed deposits calculated quarterly.
Social Security is the United States’ primary public pension and social insurance program, established by the Social Security Act of 1935 under President Franklin D. Roosevelt as part of the New Deal. It provides retirement income, disability income, survivor benefits, and Medicare health insurance to eligible Americans. Funded through payroll taxes (FICA — Federal Insurance Contributions Act), both employees and employers each pay 6.2% of wages (up to a taxable wage base of $168,600 in 2024) toward Social Security, and 1.45% each for Medicare. Self-employed individuals pay both portions (15.3% combined) through the self-employment tax. Retirement benefits are calculated based on a worker’s lifetime earnings history — specifically the average of the highest 35 years of indexed earnings. Workers can claim Social Security benefits as early as age 62 (with reduced benefits) or delay until age 70 (with significantly enhanced benefits — an 8% annual increase per year beyond full retirement age). Full Retirement Age (FRA) is 67 for workers born after 1960. The average monthly Social Security retirement benefit as of 2024 is approximately $1,907. Social Security is a “pay-as-you-go” system, meaning current workers’ payroll taxes fund current retirees’ benefits, not a funded pension. The Social Security Trust Fund is projected to be depleted by 2033 under current trends, creating a long-term fiscal challenge requiring legislative action. For India, Social Security context matters because millions of Indian-origin immigrants and US citizens contribute to and collect Social Security. India and the US do not have a bilateral totalization agreement (unlike the US has with 30 other countries), meaning Indian workers on H-1B or other visas who pay Social Security taxes but return to India before qualifying for benefits (10 years of work = 40 credits needed) may lose those contributions. This is a significant financial planning issue for Indian professionals working in the US who may not complete 10 qualifying years. India’s own aging challenge parallels Social Security concerns: India’s old-age dependency ratio will rise significantly as the demographic dividend fades, making EPF, NPS, and pension reform increasingly critical.
Sunk Cost Fallacy
Sunk cost fallacy is continuing to invest in something because of past investment, even when the rational decision is to stop. In investing, holding a losing stock ‘to get back to cost price’ rather than evaluating future prospects is a classic sunk cost error.
Time Value of Money (TVM)
TVM is the concept that a rupee today is worth more than a rupee in the future, due to earning potential. Present Value (PV) = FV/(1+r)^n. Future Value (FV) = PV×(1+r)^n. Foundation of all valuation, EMI calculation, and investment analysis.
Wealth Management
Wealth management is a holistic advisory service combining financial planning, investment management, tax planning, insurance, estate planning, and legal advisory for high-net-worth individuals (HNIs with ₹5 crore+ investable assets). Leading wealth managers in India include Kotak Private Banking, HDFC Bank Private Banking, and independent family offices.
Will and Estate Planning
A will is a legal document specifying asset distribution after death. Estate planning encompasses wills, nominations, trusts, and succession planning to minimise taxes, legal disputes, and ensure wealth passes smoothly to chosen beneficiaries.
Where these terms turn into your own numbers
Personal finance is the most densely tooled domain on this site, because nearly every concept resolves to a figure you can compute.
Search all 928 terms, with worked examples
The 53 definitions above are the personal finance set. The interactive glossary holds all 928 across every topic, with instant search and a worked example for each one showing the term applied to real Indian numbers.
Open the interactive glossary →The other fourteen glossary topics
Every topic follows the same shape: the terms A to Z with a full definition, then the Learn page, tools and worked scenarios where those terms are actually used.